The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government.
Read our disclaimer for details.

The purpose of this study is to determine whether in patients with acute decompensated congestive heart failure and the cardiorenal syndrome, i.e. a state in which therapy directed to improve symptoms is limited by further worsening renal function, fluid removal by ultrafiltration is superior to different pharmacological approaches in acutely relieving congestion and preventing further deterioration in renal function and whether it results in longer admission-free survival 90 days after enrolment

Condition or disease

Intervention/treatment

Phase

Acute Decompensated Heart Failure

Drug: Furosemide or Furosemide and DopamineDevice: Ultrafiltration

Phase 4

Detailed Description:

Acute decompensated congestive heart failure (ADCHF), the most common single cause of hospitalization over 65 years, results in 4-8% in-hospital mortality and 30-38% incidence of readmissions within 3 months after discharge. While fluid accumulation remains the main factor causing hospitalization, impaired cardiac output in ADHF causes renal arterial underfilling and increased venous pressure, reducing the glomerular filtration rate and causing acute kidney injury.

Aggressive therapy is required to alleviate volume overload during hospital admission and achievement of a dry weight is capital in preventing rehospitalisation. Currently diuretics are considered the standard of care for volume overload in ADHF, yet any patients, especially those with advanced HF become soon resistant to standard doses of loop diuretics, so escalating doses and the association of thiazides are often required to achieve effective diuresis, an approach that will progressively worsen renal function, causing the cardiorenal syndrome.

When diuretic resistance develops and symptoms persists, mechanical fluid removal via ultrafiltration should be considered. Ultrafiltration is an alternative method of sodium and water removal, that filters plasma water directly across a semipermeable membrane in response to a transmembrane pressure gradient, resulting in an ultrafiltrate that is isoosmotic compared with plasma water, In view of the limits of traditional therapies for the treatment of congestion and concomitant progressive renal dysfunction in ADHF patients, there is a compelling need for additional studies to individuate the better method for fluid removal in volume-overloaded patients and guide management decisions to reduce associated morbidity.

The main objectives of the present project are to evaluate whether in patients with acute decompensated congestive heart failure and the cardiorenal syndrome, i.e. a state in which therapy directed to improve CHF symptoms is limited by further worsening renal function, fluid removal by ultrafiltration is superior to different pharmacological approaches in acutely relieving congestion and preventing further deterioration in renal function and whether it results in longer admission-free survival 90 days after enrolment

or intravenous diuretics up to 20 mg/h and dopamine infusion at a constant rate of 3 mcg/Kg/m.

Experimental: Ultrafiltration

Device: Ultrafiltration appliance Sessions of 8 h UF are conducted on 2 subsequent days in the first 48 hours after randomization; a third session is performed on day 3 in case of persistent congestion

Device: Ultrafiltration

All loop diuretics will be discontinued. Rate of fluid removal will be based on the extent of fluid overload as assessed by increase in body weight vs the patient's known dry weight

less than 3 kg 200 ml/h

more than 3 kg and less than 5 kg 300 mlh

more than 5 kg 500 mlh

Criteria for achievement of target UF goals are removal of > 50% and <70% of fluid excess based on the estimated increase in body weight Diuretic infusion is allowed provided that a minimum of 3 hours after the end of the UF session have elapsed, at a maximum cumulative dose of 100 mg furosemide, till start of the next UF session The use of inotropic agents is prohibited

Changes in a composite clinical-lab score [ Time Frame: Baseline and 96 h after randomization,precisely:48 h after end of the last UF session in the intervention arm;24 h after end of 72 h infusional drug treatment in the control arm ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.